Valve-grinder.



E. E. TOWNSBND. VALVE GRINDER. APPLICATION FILED 00T.4, 1910.

996,435, Patented June 27, 1911.

y Ervin n. vrrownsani), or OAKLAND, cnnrronivrn.

venire-Gaiman.

Application filed ctober, 1910. Serial No. 585.9"n

To all whom it may concern.;

` Be it known that I, ELVIN E. TowNsEND,

a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Valve- Grinders, of which the following is a specification. i

This invention` relates to valve seat grinders of the type shown and described in my Patent No. 959,653, dated May 31, 1910, and the principalobjectsv of the same are to provide simple means for oscillating the valve oscillating means and for shifting the position of the seat so that oil and grit on the surface of the valve will be distributed.

' In carrying out the objects of the invention rifenerally stated above it will be understood, of course,- that the essential featuresl thereof are necessarily susceptible of changes in details andstructural arrangements, one preferred' `and practical embodiment of which is shown in the accompanying drawings, wherein Figurel is a View in 'side elevation, part-ly in section of the improved grinder.` Fig. 2

is transverse sectional view taken on the line A-A,'Fig. 1. F ig. 3 is a fragmentary view of an end portion of a drive crank forming a part of this invention.

Referring to the accompanying drawings by numerals,'it' will be seen that the improved grinder comprises a supporting frame, the body 1 of which has a transverse bearing 2 at the upper end, said body being provided with an intermediate trai'isverse recess 3, and the elongated `base l of said frame is provided with a longitudinal slot 5.

A headed shaft 6 is mounted in the bearing 2', the projected forward endv thereof having the hub 6a of amaster gear 7 mounted thereon. Said hub is provided with a circumferential groove 8 'that is engaged by an end notch 9 of a crank 10 thatis fastened to'the gear 7. Said crank is provided with a hand grip 11'. is equipped with a steadyinghandle 12.

VA shaft 13 extends through recess 3 and into body 1, the lower end of said shaft projecting into base slot 5. gear 15 is fast on shaft 13 within recess 3, said gear 15 being in mesh with the master gear 7. arm 16 fast thereon which is equipped with threaded end and intermediate openings 17 The rear end of shaft 6" A hub 14.- of a The lower endof shaft 13 has an` Specification of Letters Patent. Patented 1.11119y adapted to be selectively engaged by al screw,l 18 which carries a roller 19.'

A sleeve 20 is journaled in upper andfl lower openings in the base Lluiof thesup- Y porting frame, said sleeve extending :trans-"H14 f versely acrosslone end of slot -51 and having its projected/upper end provided with lon-f similarly provided with cam grooves 22.

gitudinal 'cam grooves 21 .andits loweriendv-.

A hub 23 is fast on sleeve 20 within .slotli 5, vsaid hub being ofk substantially the samev v length as the I'width of said slot, and equipped with a laterally projecting crank arm `24 that is provided with a longitudinal slot 25 into which tlie roller 19 ofscrew 18 projects'.A

A shaft 26 is longitudinally movable in sleeve 20, said'shaft beingprovidedwith la' transverse pin 27 in its upper vend that norinally rests in the cam grooves 21 'in the upper end of said sleeve. The lower end of; shaft 26 carries a tool socket 28 in whichfa A,

tened.

.valve oscillating tool 29 isdetachablyfase A collar 30 is fast on the' shaft 26 5.

adjacent the socket 28 yand is equipped with A-80 a cani lug 31 for engaging the camgrooves 22 inthe base of sleeve 20., A spring32vis..

1n operation, arm 16 is rotated'by means of gears 7, 15 and shaft '13, and the engagement of the roller 19 of arm 16 with the slot 25'of crank 2li, causes said crank to oscillate and the hub of said crank .being fast 'i to sleeve 20, and the latter being engaged to shaft^26 by the end pin 27 and grooves 21,

the said sleeve and siiaft are also o scillated and a similar movement is imparted to the tool 29so vthat said tool will similarly actuate the valve. Inaddition to the foregoing,

it will be seen that by pressing down on the handle 12, shaft 26 moves up through sleeve 2O against theptension of spring 32 Iso that pin 27 is lifted from the grooves 21, and cani lugs 31 enters the'grooves 2 2 and by vcontact with the cam surfaces of saidgrooves, r0-

1 t-atesthe said shaft independent of sleeve 20,

and causes the lower edge of the -tool 29 to sweep the surface being worked on so that grit, oil, and -the like will be scattered.

When the pressure 'on handle -12 4is removed,

"30,' downward, said means normally locking spring 32 automatically returns shaft 26 so that pin 27 enters the cam grooves 22 and said grooves cause said pin to rotate the shaft in a manner the same as that just de- .scribed and for the same purpose.

What l claim as my invention is 1. A valve grinder comprising a frame, a sleeve journaled therein and provided with upper and lower cam grooves, means for oscillating said sleeve, a shaft longitudinally movable in said sleeve, a pin carried thereby for engaging the upper cam grooves, a collar on said shaft and provided with a lug grooves, a shaft longitudinally movable in said sleeve, means'carried by the lower portion of saidshaft for engaging the lower grooves to'rotate said shaft independent of said sleeve when moved upward, means carried by the upper portion of said shaft for engaging the upper grooves to rotate said shaft independent of said sleeve when moved said shaft to said sleeve, means opposing longitudinal movement of said shaft relative to said sleeve and normally holding the upper groovegengaging means in engagement with said grooves, and valve oscillating means carried by said shaft.

3. A valve grinder comprising a support,

a drive shaft therein, means for rotating a crank, said cra-nk provided with a slot into which said roller projects, and a tool operating shaft carried by said sleeve.

4. A valve grindercomprising-a support, a sleeve journaled therein, mechanism carried by said support for oscillating said sleeve, a tool operating shaft longitudinally movable in said sleeve, said sleeve provided with means in its ends for rotating Said shaft, a pin carried by the upper portion of said shaft for engaging the shaft rotating means in the upper end of said sleeve, a lug on the lower portion of said shaft for engaging the shaft rotating means at the lower end of said sleeve, and a spring for opposing an upward movement of said shaft and automatically moving said shaft downward to engage. said pin with the shaft rotating means at the upper portion of said sleeve.l

In testimony whereof I affix my signature in presence of two witnesses.

ELVIN E. TOWNSEND. Witnesses:

H. C.' SGHROEDER, F. J. SCHRQEDEB.. 

